[PATCH] drm/omap: Fix port lookup for SDI output

[Laurent Pinchart]

When refactoring port lookup for DSS outputs, commit d17eb4537a7e
("drm/omap: Factor out common init/cleanup code for output devices")
incorrectly hardcoded usage of DT port 0. This breaks operation for SDI
(which uses the DT port 1) and DPI outputs other than DPI0 (which are
not used in mainline DT sources).

Fix this by using the port number from the output omap_dss_device
of_ports field.

Fixes: d17eb4537a7e ("drm/omap: Factor out common init/cleanup code for output devices")
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 drivers/gpu/drm/omapdrm/dss/output.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index de0f882f0f7b..14b41de44ebc 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -4,6 +4,7 @@
  * Author: Archit Taneja <archit at ti.com>
  */
 
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -20,7 +21,8 @@ int omapdss_device_init_output(struct omap_dss_device *out)
 {
 	struct device_node *remote_node;
 
-	remote_node = of_graph_get_remote_node(out->dev->of_node, 0, 0);
+	remote_node = of_graph_get_remote_node(out->dev->of_node,
+					       ffs(out->of_ports) - 1, 0);
 	if (!remote_node) {
 		dev_dbg(out->dev, "failed to find video sink\n");
 		return 0;
-- 
Regards,

Laurent Pinchart